1 /* Release debugging handling context. 2 Copyright (C) 2002-2011 Red Hat, Inc. 3 This file is part of Red Hat elfutils. 4 Written by Ulrich Drepper <drepper (at) redhat.com>, 2002. 5 6 Red Hat elfutils is free software; you can redistribute it and/or modify 7 it under the terms of the GNU General Public License as published by the 8 Free Software Foundation; version 2 of the License. 9 10 Red Hat elfutils is distributed in the hope that it will be useful, but 11 WITHOUT ANY WARRANTY; without even the implied warranty of 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 13 General Public License for more details. 14 15 You should have received a copy of the GNU General Public License along 16 with Red Hat elfutils; if not, write to the Free Software Foundation, 17 Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301 USA. 18 19 In addition, as a special exception, Red Hat, Inc. gives You the 20 additional right to link the code of Red Hat elfutils with code licensed 21 under any Open Source Initiative certified open source license 22 (http://www.opensource.org/licenses/index.php) which requires the 23 distribution of source code with any binary distribution and to 24 distribute linked combinations of the two. Non-GPL Code permitted under 25 this exception must only link to the code of Red Hat elfutils through 26 those well defined interfaces identified in the file named EXCEPTION 27 found in the source code files (the "Approved Interfaces"). The files 28 of Non-GPL Code may instantiate templates or use macros or inline 29 functions from the Approved Interfaces without causing the resulting 30 work to be covered by the GNU General Public License. Only Red Hat, 31 Inc. may make changes or additions to the list of Approved Interfaces. 32 Red Hat's grant of this exception is conditioned upon your not adding 33 any new exceptions. If you wish to add a new Approved Interface or 34 exception, please contact Red Hat. You must obey the GNU General Public 35 License in all respects for all of the Red Hat elfutils code and other 36 code used in conjunction with Red Hat elfutils except the Non-GPL Code 37 covered by this exception. If you modify this file, you may extend this 38 exception to your version of the file, but you are not obligated to do 39 so. If you do not wish to provide this exception without modification, 40 you must delete this exception statement from your version and license 41 this file solely under the GPL without exception. 42 43 Red Hat elfutils is an included package of the Open Invention Network. 44 An included package of the Open Invention Network is a package for which 45 Open Invention Network licensees cross-license their patents. No patent 46 license is granted, either expressly or impliedly, by designation as an 47 included package. Should you wish to participate in the Open Invention 48 Network licensing program, please visit www.openinventionnetwork.com 49 <http://www.openinventionnetwork.com>. */ 50 51 #ifdef HAVE_CONFIG_H 52 # include <config.h> 53 #endif 54 55 #include <search.h> 56 #include <stdlib.h> 57 #include <assert.h> 58 #include <string.h> 59 60 #include "libdwP.h" 61 #include "cfi.h" 62 63 64 static void 65 noop_free (void *arg __attribute__ ((unused))) 66 { 67 } 68 69 70 static void 71 cu_free (void *arg) 72 { 73 struct Dwarf_CU *p = (struct Dwarf_CU *) arg; 74 75 Dwarf_Abbrev_Hash_free (&p->abbrev_hash); 76 77 tdestroy (p->locs, noop_free); 78 } 79 80 81 #if USE_ZLIB 82 void 83 internal_function 84 __libdw_free_zdata (Dwarf *dwarf) 85 { 86 unsigned int gzip_mask = dwarf->sectiondata_gzip_mask; 87 while (gzip_mask != 0) 88 { 89 int i = ffs (gzip_mask); 90 assert (i > 0); 91 --i; 92 assert (i < IDX_last); 93 free (dwarf->sectiondata[i]); 94 gzip_mask &= ~(1U << i); 95 } 96 } 97 #endif 98 99 int 100 dwarf_end (dwarf) 101 Dwarf *dwarf; 102 { 103 if (dwarf != NULL) 104 { 105 if (dwarf->cfi != NULL) 106 /* Clean up the CFI cache. */ 107 __libdw_destroy_frame_cache (dwarf->cfi); 108 109 Dwarf_Sig8_Hash_free (&dwarf->sig8_hash); 110 111 /* The search tree for the CUs. NB: the CU data itself is 112 allocated separately, but the abbreviation hash tables need 113 to be handled. */ 114 tdestroy (dwarf->cu_tree, cu_free); 115 tdestroy (dwarf->tu_tree, cu_free); 116 117 struct libdw_memblock *memp = dwarf->mem_tail; 118 /* The first block is allocated together with the Dwarf object. */ 119 while (memp->prev != NULL) 120 { 121 struct libdw_memblock *prevp = memp->prev; 122 free (memp); 123 memp = prevp; 124 } 125 126 /* Free the pubnames helper structure. */ 127 free (dwarf->pubnames_sets); 128 129 __libdw_free_zdata (dwarf); 130 131 /* Free the ELF descriptor if necessary. */ 132 if (dwarf->free_elf) 133 elf_end (dwarf->elf); 134 135 /* Free the context descriptor. */ 136 free (dwarf); 137 } 138 139 return 0; 140 } 141 INTDEF(dwarf_end) 142